20" outside diameter, 16" inside diameter. Predrilled. Shown with Sagittaria montevidensis, Aztec Arrowhead; Lobelia syphylitica, Blue Lobelia and Lysimachia spp., Variegated Creeping Jenny. Plant selection can be growers choice or a selection can be made from the availability list. We will review it for Island appropriateness and contact you with recommendations if needed.